1. (5) echo, reverberation, sound reflection, replication -- (the repetition of a sound resulting from reflection of the sound waves; "she could hear echoes of her own footsteps")
2. Echo -- ((Greek mythology) a nymph who was spurned by Narcissus and pined away until only her voice remained)
3. echo -- (a reply that repeats what has just been said)
4. echo -- (a reflected television or radio or radar beam)
5. echo -- (a close parallel of a feeling, idea, style, etc.; "his contention contains more than an echo of Rousseau"; "Napoleon III was an echo of the mighty Emperor but an infinitely better man")
6. echo -- (an imitation or repetition; "the flower arrangement was created as an echo of a client's still life")